Troublesome Issues in Delaying the Original Start-up of Coking
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Delayed initial start of coking: After the steam pressure test and depressurization of the coke tower system, when the diesel is being cold-transported, will the coke tower system develop negative pressure due to steam condensation? Need additional pressure? I think there is no need to add pressure to an elevated torch, but is it necessary to add pressure to a low-mounted torch? Please give guidance!
When we delayed the initial start of coking, the coke tower system steam pressure was tested and depressurized and connected to the flare system through the steam blowing and venting system. The entire plant's flare system was at a slightly positive pressure (0.01MPa), and there would be no negative pressure in the coke tower. I'm not sure if this is correct, please let other experts give their opinions.
I agree with the statement on the second floor. The improved venting tower at the coke tower outlet is connected to the venting system (gas cabinet or torch), so there will be no negative pressure.
When we started work, the outlet of the coke tower was also an improved vent tower. The gas cabinet or torch at the top of the vent tower was connected, and there was no negative pressure.